Thread: Nested For Loop

Using nested for loops I'm suppose to create a pyramid that looks like this:

Code:

                            1
                        1   2   1
                    1   2   4   2   1
                1   2   4   8   4   2   1
            1   2   4   8  16   8   4   2   1
        1   2   4   8  16  32  16   8   4   2   1
    1   2   4   8  16  32  64  32  16   8   4   2   1
1   2   4   8  16  32  64 128  64  32  16   8   4   2   1

I have everything working except the spacing between the numbers. Notice that between the single digit numbers like 1 and 2 there are three spaces, but between double digit numbers like 32 and 64 there are only two spaces, etc. Any suggestions on how to do this type of spacing, here is my code so far.

Code:

/*

My name is Jack Trocinski

*/

#include <stdio.h>
#include <stdlib.h>
#include <math.h>

int main()
{
	int row; // row number
	int space; // white space
	int column; // column number
	int n; // degree of power
	int i; // used in for loop
	int a; // result obtained by pow
	
	for (row = 0; row <= 7; ++row) {
		
		column = (7 - row) * 4;
		n = 0;
		
		for (space = column; space > 0; --space) {
			printf(" ");			
			}
			
		for (i = 0; i <= row; ++i) {
			a = pow(2, n);
			printf("%d", a);
			++n;
			}
			
			--n;
			--n;
			
		for (i = 0; i < row; ++i) {
			a = pow(2, n);
			printf("%d", a);
			--n;
			}
		
		printf("\n");
	
	
	
	}
	
	system("pause");
	return 0;
}

You can set field width with printf, I would use that.

printf("%5d", num);

Got it to work, but I needed to use "%4d" not 5. Thanks Subsonics!